Turns out this exists! The company I worked at last summer, GHGSAT [1], focuses exactly on this.
They have a fleet of satellites and aircraft taking high-resolution (1-25m ground resolution) pictures of critical infrastructure on demand that allow oil and gas companies and landfills, notably, to identify those leaks and either patch them to recover the methane or torch the methane, greatly reducing the impact of the leak.
The figures mentioned in the original article are very much what we observed as well. It wasn't all that uncommon to see leaks releasing 12 tons of methane per hour be left unpatched for *weeks*.
Thanks to pressure from investors and to the additional revenue gained from identifying and patching those leaks, a lot of governments and the biggest oil companies have started paying for this service.